Straight edge fixture for woodwarking

ABSTRACT

A FIXTURE FOR USE IN WOODWORKING HAVING AN ELONGATED ANGULAR GUIDE INCLUDING A SINUOUS SPRING AND FASTENERS TO HOLD A PIECE OF BOARD IN ALIGNMENT AGAINST A SAW GUIDE AND PROVIDE A STRAIGHT EDGE FOR THE SAW TO FOLLOW IN CUTTING A STRAIGHT EDGE ACROSS THE BOARD.

United States Patent Inventor James L. Bishop, Jr.

Memphis, Tenn. (606 Kingshighvvay, Cape Girardeau, Mo., 63701) Appl. No. 719,328 Filed Apr. 8, 1968 Patented June 28, 1971 STRAIGHT EDGE FIXTURE FOR WOODWORKING 4 Claims, 4 Drawing Figs. 05. C1 143/157, 33/76, 143/47, 143/51, 83/442 Int. Cl B27b 27/02 Field of Search 308/3, 3

[56] References Cited UNITED STATES PATENTS 1,038,215 1912 Shaw 143/51X 1,917,926 1933 Decker..... SOS/3X 3,011,530 1961 Lamb 143/47X Primary Examiner-Andrew R. Juhasz Assistant ExaminerJames F. Coan Attorney-Paul M. Denk l STRAIGHT EDGE FIXTURE FOR WOODWORKING BACKGROUND OF THE INVENTION l. Field of the Invention The present invention relates to guide means for use with power driven saw means to provide a substantially straight saw-cut across a piece of lumber.

The present invention further relates to means detachably connected to a piece of lumber to provide straight edge guide means for use with a power saw to provide the saw with alignment means for cutting a straight saw-cut along a board having an oppositely spaced, substantially parallel irregular edge.

2. Description of the Prior Art There have been prior devices for use with woodworking fixtures but these prior devices'have related to specialized means such as jigs for sawing tenons, safety attachments to power saws, saw table guide blocks and rip fences for saw tables. None of these prior devices has provided means for aligning an irregular surface against a saw guide to effect a straight line saw-cut across a piece of lumber, parallel to the irregular surface. I

A search disclosed the following reference as most pertinent: US. Pat. Nos. 1,038,215, Shaw, Sept. 10, 1912; 1,713,329, Clayton, May 14, 1929; 2,679,868, Johnson, June 1, 1954; 2,739,625, Peters, Mar. 27, 1956; 2,799,303, Lee, July 16, 1957.

Field of the search was: Class I43, Subclasses SI and 52.

SUMMARY OF THE INVENTION The present invention provides substantially elongated guide means for detachable engagementwith a semiflnished board or similar piece of lumber.

,The present invention further provides elongated sinuous spring means included in the elongated guide means for aligning the guide means substantially parallel with the longitudinal axis of the board or piece of lumber.

. The present invention additionally includes edge means carried ,by. the elongated guide means for sliding engagement with the guide bar of a power saw to provide the saw blade with a substantially straight cutting line longitudinally across the board or piece of lumber.

OBJECTS OF THE INVENTION The principal object of the present invention is-to provide a straight edge guidefor use in woodworking.

Another object of the present invention is to provide a straight edge guide for use: in woodworking. having means therein for detachable engagement with an unfinished side of a piece of lumber. I

A further object of the present invention is to provide a straight edge. guide for woodworking includingv sinuous spring means to align' the guide with-oneof the longitudinal sides of a piece of lumber.

Another object of the present invention is to provide a straight edge guide for detachable engagement with a board for aligning the board with the guideof a power driven saw.

A further object of the present. invention is to-provide guide means for aligning anunfinished side of a piece of'lumber with a power saw to effect an. uninterrupted substantially straight finishing cut along the other of the sidesof the piece of lumber substantially perpendicular tothe ends of the piece of lumber; and v Another object of. the present invention is to-generally improve the design, construction and effi'ciency. of straight-edge guide means-for use in woodworking.

DESCRIPTION OF THE DRAWINGS FIG. 2 is a fragmentary invertedjplah view of the device of FIG. I.'

ing the device in use with portable saw means.

DESCRIPTION OF THE PREFERRED EMBODIMENT Referring now to the drawings in which the various 'parts are indicated by numerals, the present invention comprises a substantially elongated woodworking guide means 11 including a pair of coextensive flange members 13, I5, and a common coextensive junction 17 provided for maintaining the respective flanges l3, 15 in substantially rigid perpendicular relation. The flange 13 is provided with ajplurality of substantially longitudinally aligned apertures 19 spaced somewhat inwardly from and parallel to the distal edge 21 of the flange 13.

The flange 15 depending. from the common junction 17, substantially perpendicularwith the flange I3 is provided with a substantially elongated sinuous flexible band 23 attached thereto on the inner face thereof. The sinuous flexible band 23 preferably includes a plurality of sinusoidal members 25- alternately interposed between I a like plurality of oppositely curving sinusoidal members 27. The sinusoidal members 25 are rigidly affixed to the inner surface of the flange 15 as by rivets orlike fastening. devices.

The guide means I1 additionally comprises fastening means such as the nails 29 for attaching the flange 13 thereof to a semiflnished board 31 as best: illustrated in FIG. 1 of the drawings. It will be thus readily seen that the guide meansll are detachably attached to the board 3i as by the nails 29 driven through the apertures 19' carried by the flange 13, into the board 3I with the sinuous flexible band 23 in substantial abutment with the bark or unfinished edge 33 of the board 31. The guide means II are attached to the board 31 along the edge 33 thereof in such manner as to align the guide means 11 in substantially spaced parallel relation with the longitudinal axis of the board 31. It will be further seen that the sinusoidal members 27 flexibly bearing against the irregularly contoured unfinished edge 33 of the board 31' will additionally maintain the flange 15 of the guide 11 in substantial parallelism with the longitudinal axis of the board 31.

In the use of the device of the present invention, the guide means 11 are detachabl'y' attached to the board 31' as by the nails 29 with the sinuous band 23 somewhat flexibly compressedbetween the edge 33 of the board 31 and the vertical flange 15 of the guide means 11 to effect'a substantial parallel;

ism' between the vertical flange 15 of the guide means andthej longitudinal axis of the board 31. The outer longitudinal sur face of the flange 15 is placedin: adjacency with the saw guide bar 35' and slidably moved thereagainsttoeffect a saw-cut 37 by the saw blade 39 substantially parallel withthe vertical flange 15 of the guide means 11-. Pursuant the'saw cut 37, the guide means 11 may be detachedfrom the board'3l' by removing. the nails 29" therefrom The board 31- may bethen rotated. to align the saw-cut 37' with the saw guide bar 35 in close adjacency and further moved slidabl'y thereagainst to cause the saw blade 39 to effect the removal, by conventional established means, of the irregularly contour'ed edge 33 of .the board 31" to provide the user-of the device with a finished dimensioned piece of lumber.

lcla'imr l. A straight edge fixture for guide'means'including' I. a first flange having apertures therein, adapted for detachable'engagement withthe sideof a board, v f

woodworking comprising 2. a second: flange depending from one side of said first flange, a. in spaced adjacency to one of the unfinished ed'ge'sof said board, 3-. a: sinuous band attached-to'said second flange'interposed between said secondflange and said one of the unfinished edges of said board, and I said sinusoidaLmembers are'rig idly attached to said second flange.

4. Means in accordance with claim 2, wherein one-half of said sinusoidal. members are in flexible compressive abutment with the irregular edge of said board. 

